AWS Lambda Function not read input json

Question

My code can not correct read JSON input.


def lambda_handler(event, context):
    WEBHOOK_URL = "https://" + os.environ['WEBHOOK_URL']

    sns        = event['Records'][0]['Sns']
    json_msg   = json.loads(sns['Message'])

    region     = sns['TopicArn'].split(':')[3]
    status     = json_msg['NewStateValue']

    message    =  'region: ' + region + '\n' + 'status: ' + status

    payload = {
        "username": "bot",
        "attachments": [
            {
                "text": str(message)
            }
        ]
    }

    r = requests.post(WEBHOOK_URL, json=payload)
    return r.status_code

I get a region, but I don't' get status. Example JSON input: https://github.com/builtinnya/aws-sns-slack-terraform/blob/51b954ca8f736e08deccd4196670a187f7b58fe5/sns-to-slack/lambda_function.py#L278

yogesh10 · Accepted Answer · 2019-08-28 10:09:49Z

1

use below lines:-

import json

def lambda_handler(event, context):
 WEBHOOK_URL = "https://" + os.environ['WEBHOOK_URL']

    sns        = event['Records'][0]['Sns']
    json_msg   = json.loads(sns['Message'])

    region     = sns['TopicArn'].split(':')[3]
    status     = json_msg['NewStateValue']

    message    =  'region: ' + region + '\n' + 'status: ' + status

    payload = {
        "username": "bot",
        "attachments": [
            {
                "text": str(message)
            }
        ]
    }

    r = requests.post(WEBHOOK_URL, json=payload)
    response = {
            "statusCode": r.status_code,
            "body": json.dumps("Your message")
        }
    return response

edited Aug 28, 2019 at 10:09

answered Aug 28, 2019 at 9:56

yogesh10

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5 Comments

Alexander SKyzZz Over a year ago

i use: from future import print_function import os import json import base64 import re import requests.....but nothing

yogesh10 Over a year ago

Check modified answer

Alexander SKyzZz Over a year ago

I got some joke because of real JSON which go to AWS topic get me the result, but test JSON work only in Lambda-manual-test. I got JSON but I have inside dict and I can parse this dict: alarm_name = out.get('AlarmName')

yogesh10 Over a year ago

What are you trying to say now? @AlexanderSKyzZz

Alexander SKyzZz Over a year ago

Example JSON input for AWS SNS topic's doesn't work.

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